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Search for isolated photons from flavor-changing neutral-current decay of a new quark at the KEK e sup + e sup minus collider TRISTAN

Journal Article · · Physical Review Letters; (USA)
 [1]; ; ; ; ; ; ; ; ;
  1. Department of Physics, Tohoku University, Sandai (Japan)
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A search for a new charge {minus} 1/3 quark has been carried out at the KEK {ital e}{sup +}{ital e}{sup {minus}}Collider TRISTAN under the assumption of its photonic decay through a flavor-changing neutral current (FCNC). The observed number of multihadronic events with isolated photons is consistent with that expected from the known five quark flavors. Including the usual charged-current decays, limits on the absolute photonic branching ratio and FCNC processes were obtained.
OSTI ID:
5218522
Journal Information:
Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:17; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English

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645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CHARGED CURRENTS
COMPOSITE MODELS
CURRENTS
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GLUONS
HADRONS
HIGGS BOSONS
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INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRAL CURRENTS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
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PARTICLE PRODUCTION
PHOTONS
POSTULATED PARTICLES
QUARK MODEL
QUARKS
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